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Rissoina (Pachyrissoina)
Taxonomy
Pachyrissoina was named by Boettger (1893) [Sepkoski's age data: T Mi R]. It is extant.
It was reranked as Rissoina (Pachyrissoina) by Ponder (1984).
It was assigned to Rissoina by Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).
It was reranked as Rissoina (Pachyrissoina) by Ponder (1984).
It was assigned to Rissoina by Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Rissoina alabamenesis, Rissoina bakeri, Rissoina effusa, Rissoina elongata, Rissoina firmata, Rissoina flexuosa, Rissoina fragilis, Rissoina gisna, Rissoina hannai, Rissoina heterolira, Rissoina indrai, Rissoina juncea, Rissoina laurae, Rissoina nigeriensis, Rissoina plicata, Rissoina subornata, Rissoina supracosta
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Subg. Rissoina (Pachyrissoina) Boettger 1893
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Rissoina (Pachyrissoina) walkeri Smith 1893
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. F. Ponder 1984 | Shell: rather broad, large, whorls lightly convex, narrowly shouldered just below sutures, with strong, rounded axial ribs and weak spiral striae. Axials terminated at periphery by a strong spiral cord (Fig. 56). Protoconch not known. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Collections
No collection or age range data are available